diff --git a/src/aphront/storage/connection/mysql/AphrontMySQLDatabaseConnection.php b/src/aphront/storage/connection/mysql/AphrontMySQLDatabaseConnection.php
--- a/src/aphront/storage/connection/mysql/AphrontMySQLDatabaseConnection.php
+++ b/src/aphront/storage/connection/mysql/AphrontMySQLDatabaseConnection.php
@@ -93,9 +93,39 @@
     if (!$ok) {
       mysql_set_charset('binary', $conn);
     }
+	
+	$this->set_sql_mode(array(
+      'STRICT_ALL_TABLES',
+      'NO_ZERO_IN_DATE',
+      'NO_ZERO_DATE',
+      'ERROR_FOR_DIVISION_BY_ZERO',
+      'NO_AUTO_CREATE_USER',
+      'NO_ENGINE_SUBSTITUTION'),
+    $conn);
 
     return $conn;
   }
+  
+  protected function set_sql_mode($modes = array(), $conn) {
+    if (empty($modes)) {
+      $res = mysql_query('SELECT @@SESSION.sql_mode', $conn);
+      if (empty($res)) {
+        return;
+      }
+
+      $modes_str = mysql_result($res, 0);
+      if (empty($modes_str)) {
+        return;
+      }
+
+      $modes = explode(',', $modes_str);
+    }
+
+    $modes = array_change_key_case($modes, CASE_UPPER);
+    $modes_str = implode(',', $modes);
+
+    mysql_query("SET SESSION sql_mode='$modes_str'", $conn);
+  }
 
   protected function rawQuery($raw_query) {
     return @mysql_query($raw_query, $this->requireConnection());
diff --git a/src/aphront/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php b/src/aphront/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php
--- a/src/aphront/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php
+++ b/src/aphront/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php
@@ -80,9 +80,43 @@
     if (!$ok) {
       $ok = $conn->set_charset('binary');
     }
+	
+	$this->set_sql_mode(array(
+      'STRICT_ALL_TABLES',
+      'NO_ZERO_IN_DATE',
+      'NO_ZERO_DATE',
+      'ERROR_FOR_DIVISION_BY_ZERO',
+      'NO_AUTO_CREATE_USER',
+      'NO_ENGINE_SUBSTITUTION'),
+    $conn);
 
     return $conn;
   }
+  
+  protected function set_sql_mode($modes = array(), $conn) {
+    if (empty($modes)) {
+      $res = mysqli_query($conn, 'SELECT @@SESSION.sql_mode');
+      if (empty($res)) {
+        return;
+      }
+
+	  $modes_array = mysqli_fetch_array($res);
+      if (empty($modes_array)) {
+        return;
+      }
+	  $modes_str = $modes_array[0];
+	  if (empty($modes_str)) {
+		  return;
+	  }
+
+      $modes = explode(',', $modes_str);
+    }
+
+    $modes = array_change_key_case($modes, CASE_UPPER);
+    $modes_str = implode(',', $modes);
+
+    mysqli_query($conn, "SET SESSION sql_mode='$modes_str'");
+  }
 
   protected function rawQuery($raw_query) {
     $conn = $this->requireConnection();